implemented OpenCL version of cv::preCornerDetect
BFMatcher

match

radiusMatch
fixed docs
removed unnecessary functions and variables
dumpinfo
fix message sent to user during cross_compilation
Merge pull request #2134 from vbystricky:ocl_calcOpticalFlowFarneback
Merge pull request #2186 from ilya-lavrenov:tapi_precornerdetect
Merge pull request #2189 from ilya-lavrenov:tapi_sepFilter2D_fix
added perf test
Merge pull request #2175 from vrabaud:2.4
Merge pull request #2188 from jet47:gpumat-copyto-fix
Merge pull request #2110 from hmax:master
Added ocl_matchTemplate( without dft)
Fixed warnings
Fixed trailing whitespace
Fixed test_match_template
fixed
fixed
fixed